For our purposes of "RINO Hunting" I think a better litmus test would be to see how Republicans vote on IMMIGRATION. Remember that all the sellouts to the conservative cause tend to lean toward the treasonous "open borders" position.
Here: http://grades.betterimmigration.com/view_all.php3?Flag=GOP is a list from Numbers USA in scorecard format of Republicans in Congress. Pay special attention to those that get less than an 80% positive rating on immigration. You'll notice all the usual suspect RINOs are there on the list.
For those that are "borderline" I would check to see how NARAL (ugh) rates them. Anything higher than a 0% rating from that evil organization would make them bad news.
Deciding whether someone is a RINO based on their stance on one or two important issues is stupid. Look at their overall record. A bunch of freepers here use the little abortion/illegal alien litmus test on Peter King and claim he's a great guy because he's solid on those two issues. However, looking at his CAREER record you can see he's a total traitor to conservatives and far more than liberal than John McCain. He's been wrong side of major issues at least a dozen times. For example...
Clinton impeachment - King was one of only five RINOs who voted against impeaching Bill Clinton. He was by far the most active, going on all the news networks and talk shows to defend Clinton.
2000 presidential campaign - King was one of the earliest and strongest McCain backers, and continued to stand by McCain even after McCain insulted Christian conservatives and stabbed activists in the back.
2008 presidential campaign - Apparently deciding McCain wasn't liberal enough, King was one of the biggest and most outspoken supporters of liberal Republican Rudy Giuliani, actively campaigning for him and trashing conservative presidential candidates throughout the primary. 2008 veep selection - King was one the major adovocates urging McCain to pick Lieberman for Vice President.
2009 Congressional race -- King, along with Newt Gingrich, was one of the staunchest defenders of the Scozzafava nomination and attacked Hoffman supporters.
Pelosi's minimum wage scam - King strongly supported it
Cash for Clunkers - also strongly supported by King
CAFE standards - See above
Guns - King is a major proponent of ALL forms of gun control, and lead the fight for the "assault weapons" ban. He gets D and F ratings from the NRA and the GOA on a regular basis.
SCHIP - King supported this Democract scam.
big government pork/earmarks - King is known for making threats and resorting to blackmail to bring home bacon for his consituents.
Charlie Rangle scandal - King was one of only six Republicans to break ranks with a Republican attempt to have Charles Rangel removed as Chairman of the House Ways and Means committee
Terrorism - King is the most outspoken apologists for the IRA terrorists and was instrumental in securing a visa for Gerry Adams, the leader of Sein Fein (the socialist party that is the political wing of the IRA) to enter the USA. Conservative values - King was rated one of the Top 10 House RINOs by Human Events, based on his consistantly dismal American Conservative Union ratings and heavy support for Democrat legislation.
So does the fact he's right on abortion and immigration excuse him loudly supporting the Democrats on everything else?